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External or internal covering/lining of the body and organs.
Epithelial Tissue
Tissues that provide general structure, mechanical strength, has abundant amount of ECM
Connective Tissue
Contraction/movement
Muscular Tissue
Interpretation of stimulus.
Nervous Tissue
Provides structural support for the epithelium and serves as a selective barrier for the movement of materials to and from the supporting tissue.
Basement Membrane
Epidermis of skin
Ectoderm
Lining epithelium of kidneys
Mesoderm
Lining epithelium of gastrointestinal tracts.
Endoderm
Single layer of flat cells
Simple squamous
Single layer of cuboidal cells
Simple cuboidal
Single layer of tall, columnar cells.
Simple columnar
Lined by several layers of cells
Stratified Epithelium
•Maturation from cuboidal basal layer to flattened surface layer.
Stratified squamous
Excretory ducts of salivary sweat glands
Stratified cuboidal
Conjunctiva lining the eyelids
Stratified columnar
Contains cells that are flattened and cells that are cuboidal
Transitional Epithelium
Modification of simple epithelium (with cilia)
Pseudostratified Epithelium
Tightly packed, microscopic projection of the apical surface of intestinal absorptive cells.
MICROVILLI
Actively motile processes that proper substances along their surfaces.
CILIA
Long microvilli in the epididymis and vas deferens of the male reproductive tract.
STEREOCILIA
• Produces thick mucus secretion • Synthesize and secrete mucus.
GOBLET CELLS
incomplete development of tissue
Hypoplasia
presence of new abnormal tissue growth
Neoplasia
transformation of one tissue to another.
Metaplasia
increase the number of cells.
Hyperplasia
✓ a malignant neoplasm ✓ an abnormal or uncontrolled growth made up of epithelial cells
Carcinoma
Partial destruction of cells.
Apocrine gland
Total destruction of the gland of the secretory unit themselves
Holocrine glands
Not destruction
Merocrine gland
Contain both serous and mucous type
Mixed gland
Secretes living cells
Cytogenic gland
A benign epithelial growth with grandular morphology.
Adenoma
Malignant growth.
Adenocarcinoma
Occluding junction or zonula Occludens.
TIGHT JUNCTION
Zonula Adherens
ADHERING JUNCTION
link adjacent cells to cell adhesion
Desmosomes
link epithelial cells to BM.
Hemidesmosome-
• Communication junctions • Allows passage of molecules
GAP JUNCTION